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Morphology of immature stages, biology, and systematic position of the Violet seed weevil, Orobitis cyanea (Linnaeus, 1758) (Curculionidae, Conoderinae, Orobitiditae, Orobitidini)

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Morphology of immature stages, biology, and systematic position of the Violet seed weevil, Orobitis cyanea (Linnaeus, 1758) (Curculionidae, Conoderinae, Orobitiditae, Orobitidini)

by
Gosik, Rafał; Sprick, Peter

Publication date
Usage
Attribution 4.0 InternationalCreative Commons Licenseby
Topics
Blacus, escape mechanism, life cycle, mimicry, parasitoid, thanatosis
Publisher
Pensoft Publishers
Collection
biodiversity
Contributor
Pensoft Publishers
Language
English
Rights
https://biodiversitylibrary.org/permissions
Rights-holder
Copyright held by individual article author(s).
Volume
1121
Item Size
23.3M
Abstract
The mature larva of the weevil species Orobitis cyanea (Linnaeus, 1758), one of only two Palaearctic members of the supertribe Orobitiditae, is re-described, while the pupa is described for the first time. The biology of this species was studied at two sites in Germany. It was reared from seed capsules of Viola canina L. (Violaceae), and feeding holes were observed on V. riviniana Rchb. Adults of Orobitis cyanea and O. nigrina Reitter, 1885, specialists of Viola, show a well-developed escape mechanism, to which contribute a smooth surface, a rounded, nearly spherical body shape, and a seed-imitating thanatosis behaviour. The molytine weevil Leiosoma cribrum (Gyllenhal, 1834), the only other known weevil specialist of Viola in Europe, has a smooth surface, also, and is the most spherical species of the genus. The unique characters of the larva and pupa of Orobitis cyanea are discussed in regard to the systematic position of this taxon.
Addeddate
2025-03-20 12:33:22
Bhl_virtual_titleid
210914
Bhl_virtual_volume
v.1121 (2022)
Call number
10_3897_zookeys_1121_86888
Call-number
10_3897_zookeys_1121_86888
Foldoutcount
0
Genre
article
Identifier
morphologyimmat1121gosi
Identifier-ark
ark:/13960/s2fgbx3nkc9
Identifier-bib
10_3897_zookeys_1121_86888
Identifier-doi
10.3897/zookeys.1121.86888


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